25 / 2016-06-20 14:58:41

High-performance Supercapacitor Based on Ag2S / porous carbon Composite

10555,，porous carbon

High-performance Supercapacitor Based on Ag2S / porous carbon Composite
Qingyong Wanga,b, Yongjin Zoua,b,*, Cuili Xianga,b, Fen Xua,b, Lixian Suna,b

aGuangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, P.R. China
bGuangxi Collaborative Innovation Center of Structure and Property for New Energy Materials, Guilin 541004, P.R. China
*Corresponding author. E-mail: zouy@guet.edu.cn

This work reports on the physical characteristics and electrochemical properties of the composite Ag2S nanoparticle and porous carbon (PC) derived from polypyrrole (Ppy) as electrode material. The N-doped carbon was produced by means of chemical activation using Potassium hydroxide (KOH) as activating agent with the activation temperature of 750 °C. The specific surface area of 4090 m2g-1 was achieved and consists mainly of mesoporous. The as-prepared composite is characterized using X-ray diffraction (XRD), Fourier transform infrared (FT-IR), Scanning electron microscopy (SEM), Transmission electron microscope(TEM). The electrochemical properties of the composites were analyzed using cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy in 6M KOH as electrolyte.

The authors wish to express their gratitude and appreciation for the National Science Foundation of China (51561006, 51461011, 51461010, 51401059, and U1501242), the Guangxi Natural Science Foundation (2013GXNSFBA019243, 2014GXNSFAA118318, 2014GXNSFBA118240, and 2015GXNSFAA139282), and the Innovation Project of GUET Graduate Education (2016YJCX23).